<template>
    <view>
        <view class="search-box">
            <uni-search-bar placeholder="请输入内容" @input="input" cancelButton="none" :radius="100"></uni-search-bar>
        </view>
        <!-- 搜索建议列表 -->
        <view class="sugg-list" v-if="searchResult.length !== 0">
            <view class="sugg-item" v-for="(item,i) in searchResult" :key="i" @click="gotoDetail(item)">
                <view class="goods-name">
                    {{item.goods_name}}
                </view>
                <uni-icons type="arrowright" size="16"></uni-icons>
            </view>
        </view>
        <!-- 搜索历史 -->
        <view class="history-box" v-else>
            <view class="history-title">
                <text>搜索历史</text>
                <uni-icons type="trash" size="17" @click="clean"></uni-icons>
            </view>
            <!-- 搜索列表 -->
            <view class="history-list">
                <uni-tag  :text="item" v-for="(item, i) in histories" :key="i" @click="gotoGoodsList(item)"></uni-tag>
            </view>
        </view>
       
    </view>


</template>

<script>
    export default {
        data() {
            return {
                timer: null,
                kw: '',
                searchResult: [],
                historyList: ['a', 'app', 'apple']
            };
        },
        onLoad(){
            this.historyList = JSON.parse(uni.getStorageSync('kw') || '[]')
        },
        computed:{
            histories(){
                return [...this.historyList].reverse()
            }
        },
        methods: {
            input(e) {
                clearTimeout(this.timer)
                this.timer = setTimeout(() => {
                    this.kw = e
                    this.getSearchList()
                }, 500)
            },
            async getSearchList() {

                if (this.kw.length === 0) {
                    this.searchResult = []
                    return
                }

                const {
                    data: res
                } = await uni.$http.get('/api/public/v1/goods/qsearch', {
                    query: this.kw
                })
                if (res.meta.status !== 200) return uni.$showMsg()
                this.searchResult = res.message
                
                this.saveSearchList()
            },
            saveSearchList(){
                // this.historyList.push(this.kw)
                const set = new Set(this.historyList)
                set.delete(this.kw)
                set.add(this.kw)
                this.historyList = Array.from(set)
                uni.setStorageSync('kw',JSON.stringify(this.historyList))
            },
            gotoDetail(item) {
                uni.navigateTo({
                    url: `/subpkg/goods_detail/goods_detail?goods_id=${item.goods_id}`
                })
            },
            clean(){
                this.historyList = []
                uni.setStorageSync('kw', '[]')
            },
            gotoGoodsList(kw) {
                uni.navigateTo({
                    url:'/subpkg/goods_list/goods_list?query=' + kw
                })
            }
        }
    }
</script>

<style lang="scss">
    .search-box {
        position: sticky;
        top: 0;
        z-index: 999;
    }

    .sugg-list {
        padding: 0 5px;

        .sugg-item {
            font-size: 12px;
            padding: 13px 0;
            border-bottom: 1px solid #efefef;
            display: flex;
            align-items: center;
            justify-content: space-between;

            .goods-name {
                white-space: nowrap;
                overflow: hidden;
                text-overflow: ellipsis;
                margin-right: 3px;
            }
        }
    }

    .history-box {
        padding: 0 5px;

        .history-title {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 40px;
            font-size: 13px;
            border-bottom: 1px solid #efefef;
        }

        .history-list {
            display: flex;
            flex-wrap: wrap;
            .uni-tag {
                margin-top: 5px;
                margin-right: 5px;
            }
 
        }
    }

</style>